| 查看: 559 | 回复: 6 | |||
| 当前主题已经存档。 | |||
hejin04c荣誉版主 (著名写手)
小木虫乐乐虫
|
[交流]
【专题】每日文献一篇
|
||
|
前段时间忙于考试，现在终于结束了。作为实习版主，一直没有给大家带来什么很好的东西。此贴意在和大家共同发探讨一些电化学中的问题。期待大家了 Article abstract -------------------------------------------------------------------------------- Nature Materials 9, 68 - 74 (2009) Published online: 29 November 2009 | doi:10.1038/nmat2590 Subject Category: Materials for energy A 3.6 V lithium-based fluorosulphate insertion positive electrode for lithium-ion batteries N. Recham1, J-N. Chotard1, L. Dupont1, C. Delacourt1, W. Walker1,2, M. Armand1 & J-M. Tarascon1,2 -------------------------------------------------------------------------------- AbstractLi-ion batteries have contributed to the commercial success of portable electronics, and are now in a position to influence higher-volume applications such as plug-in hybrid electric vehicles. Most commercial Li-ion batteries use positive electrodes based on lithium cobalt oxides. Despite showing a lower voltage than cobalt-based systems (3.45 V versus 4 V) and a lower energy density, LiFePO4 has emerged as a promising contender owing to the cost sensitivity of higher-volume markets. LiFePO4 also shows intrinsically low ionic and electronic transport, necessitating nanosizing and/or carbon coating. Clearly, there is a need for inexpensive materials with higher energy densities. Although this could in principle be achieved by introducing fluorine and by replacing phosphate groups with more electron-withdrawing sulphate groups, this avenue has remained unexplored. Herein, we synthesize and show promising electrode performance for LiFeSO4F. This material shows a slightly higher voltage (3.6 V versus Li) than LiFePO4 and suppresses the need for nanosizing or carbon coating while sharing the same cost advantage. This work not only provides a positive-electrode contender to rival LiFePO4, but also suggests that broad classes of fluoro-oxyanion materials could be discovered. [ Last edited by hejin04c on 2010-1-5 at 09:11 ] |
回复此楼» 猜你喜欢
070300 求调剂
已经有1人回复
-
深圳大学高等研究院赵伟课题组招收化学调剂生
已经有3人回复
-
物理化学论文润色/翻译怎么收费?
已经有86人回复
-
青岛大学固态电池研究团队招收材料、化学、物理等方向博士研究生
已经有32人回复
-
化学工程085602 305分求调剂
已经有17人回复
-
龋病与牙周病的表述
已经有1人回复
-
070300化学求调剂
已经有12人回复
-
武汉纺织大学全国重点实验室杨应奎教授团队拟招17-19位硕博生！
已经有0人回复
-
材料与化工专硕接受跨专业调剂（重庆市属高校）
已经有0人回复
-
武汉纺织大学全国重点实验室杨应奎教授团队拟招17-19位硕博生！
已经有0人回复
-
070300 化学学硕 初试357分 b区求调剂
已经有1人回复
2楼2010-01-05 08:56:47
hotmail45
金虫 (著名写手)
- 应助: 1 (幼儿园)
- 金币: 624.5
- 帖子: 2127
- 在线: 75.8小时
- 虫号: 160915
- 注册: 2006-01-09
- 性别: GG
- 专业: 催化化学
3楼2010-01-05 08:57:34
hejin04c
荣誉版主 (著名写手)
小木虫乐乐虫
- ECEPI: 12
- 应助: 2 (幼儿园)
- 贵宾: 0.551
- 金币: 5312.1
- 散金: 266
- 红花: 9
- 沙发: 1
- 帖子: 1441
- 在线: 193.6小时
- 虫号: 694727
- 注册: 2009-01-22
- 性别: MM
- 专业: 电化学分析
- 管辖: 电化学
4楼2010-01-05 11:32:14
wzhhust
木虫 (著名写手)
- 应助: 36 (小学生)
- 贵宾: 0.03
- 金币: 5611.8
- 散金: 1184
- 红花: 1
- 帖子: 1441
- 在线: 484.6小时
- 虫号: 635136
- 注册: 2008-10-24
- 性别: GG
- 专业: 无机非金属类光电信息与功
★
小木虫(金币+0.5):给个红包，谢谢回帖交流
小木虫(金币+0.5):给个红包，谢谢回帖交流
|
呵呵，英雄所见略同呀。 前不久推荐了这篇文章 http://muchong.com/bbs/viewthread.php?tid=1756211&fpage=0&view=&highlight=&page=1 |
5楼2010-01-05 11:38:54
hejin04c
荣誉版主 (著名写手)
小木虫乐乐虫
- ECEPI: 12
- 应助: 2 (幼儿园)
- 贵宾: 0.551
- 金币: 5312.1
- 散金: 266
- 红花: 9
- 沙发: 1
- 帖子: 1441
- 在线: 193.6小时
- 虫号: 694727
- 注册: 2009-01-22
- 性别: MM
- 专业: 电化学分析
- 管辖: 电化学
6楼2010-01-05 12:29:09
7楼2010-01-05 15:07:53
